I understand your example, filter loses the address of "8076" itself. I am curious why we need to use "Union" instead of just creating a calculated field for the "vertex union"? I would like to understand more about the union data structure.

Happy new year! Thank you for your reply. I understand your method that fixing a vertex union, counting distinct relationship, and showing rank as maximum number of those distinct values. This works! Thank you again for your kind help.

If I would like to only show the connected list (showing the connected vertex IDs and not showing vertex unions). Is there any good way to filter it out using calculations? In that case, I would like to show rank as vertex ID2 rank, not Vertex Union rank.